Pioneer VSX-2016AV-S Service Manual page 223

5
E
Step 3-3: Reset
IC501 (Pin 3) XVCRST
b
Check the parts and patterns in
No
Is the voltage
the path (IC501 to IC401, IC701).
"H" (3.3 V)?
If IC501 is failure, replace IC501.
Yes
X'tal
IC401 (Pin 37) XTAL1
b
Is
No
Check the X401 or IC401.
there the CLK
(28.63636MHz)
If X401 or IC401 is failure,
?
replace X401 or IC401.
Yes
Step 3-4: I2C
VCSDA
R353
d-1
Does
Check the parts and patterns in
No
a signal output in
the path (IC501 to IC401, IC701).
constant period
If IC501 or IC401 or IC701 is
(0 to 3.3 V)
?
failure, replace IC501 or IC401 or
Yes
IC701.
VCSCL
R354
d-2
Does
Check the parts and patterns in
No
a clock output in
the path (IC501 to IC401, IC701).
constant period
(0 to 3.3 V) If IC501 or IC401 or IC701 is
?
failure, replace IC501 or IC401 or
Yes
IC701.
Step 3-5: VIDEO CLK, DATA
IC452 (Pin 2)
LLC1
e
Check the parts and patterns in
No
Is there a clock?
the path (IC401 to IC452).
If IC401 or IC452 is failure,
replace IC401 or IC452.
Yes
IC701 (Pins 2 to 9)
P12-P19
IC453 (Pins 2 to 9)
f
Check the parts and patterns in
No
Is there a data?
the path (IC401 to IC453, IC701).
If IC401 or IC453 or IC701 is
failure, replace IC401 or IC453 or
Yes
IC701.
5
6
IC454 (Pins 2 to 9)
Is there a data?
IC452 to IC454 (Pin 1)
Is the voltage
"L" (0 V)?
Step 3-6: Video Output (480i/576i only)
IC701 (Pin 35)
Is there a
composite
signal?
CN1002 (Pin 3)
Is there a
composite
signal?
Diagnose the MAIN CONTROL
Assy or COMPOSITE Assy.
IC701 (Pin 33)
Is there a
Y signal?
CN1002 (Pin 9)
Is there a
Y signal?
Diagnose the MAIN CONTROL
Assy or S-VIDEO Assy.
VSX-2016AV-S
6
7
P2 to 9 * 720p/1080i input only
g
Check the parts and patterns in
No
the path (IC401 to IC452).
If IC401 or IC454 is failure,
replace IC401 or IC454.
Yes
XVCOE
h
Check the parts and patterns in
No
the path (IC501 to IC452, IC453,
IC454). If IC501 or IC452 or IC453
or IC454 is failure, replace it.
Yes
DACA
i-1
Check the parts and patterns in
No
the path (IC701 to R731, Q731).
If IC701 or R731 or R732 or Q731
is failure, replace it.
Yes
CVBS OUT
a
Check the parts and patterns in
No
the path (Q731 to CN1002).
If Q731 or R733 is failure,
replace Q731 or R733.
Yes
DACB
i-2
Check the parts and patterns in
No
the path (IC701 to R741, Q741).
If IC701 or R741 or R742 or Q741
is failure, replace it.
Yes
SY OUT
a
Check the parts and patterns in
No
the path (Q741 to CN1002).
If Q741 or R743 is failure,
replace Q741 or R743.
Yes
7
8
A
B
C
D
E
F
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